Malware Analysis Report

2024-12-08 02:43

Sample ID 240818-dy2afssgjh
Target af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa
SHA256 af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa
Tags
floxif backdoor discovery trojan upx
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa

Threat Level: Known bad

The file af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa was found to be: Known bad.

Malicious Activity Summary

floxif backdoor discovery trojan upx

Floxif, Floodfix

Detects Floxif payload

Loads dropped DLL

UPX packed file

ACProtect 1.3x - 1.4x DLL software

Enumerates connected drives

Drops file in Program Files directory

Unsigned PE

System Location Discovery: System Language Discovery

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-08-18 03:25

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-08-18 03:25

Reported

2024-08-18 03:28

Platform

win7-20240708-en

Max time kernel

117s

Max time network

117s

Command Line

"C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

backdoor
Description Indicator Process Target
N/A N/A N/A N/A

ACProtect 1.3x - 1.4x DLL software

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\System\symsrv.dll C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe

"C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 www.aieov.com udp
US 45.56.79.23:80 www.aieov.com tcp

Files

memory/484-3-0x0000000010000000-0x0000000010030000-memory.dmp

\Program Files\Common Files\System\symsrv.dll

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/484-5-0x0000000001004000-0x0000000001007000-memory.dmp

memory/484-11-0x0000000010000000-0x0000000010030000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-08-18 03:25

Reported

2024-08-18 03:28

Platform

win10v2004-20240802-en

Max time kernel

134s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe"

Signatures

Floxif, Floodfix

backdoor trojan floxif

Detects Floxif payload

backdoor
Description Indicator Process Target
N/A N/A N/A N/A

ACProtect 1.3x - 1.4x DLL software

Description Indicator Process Target
N/A N/A N/A N/A

UPX packed file

upx
Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A

Enumerates connected drives

Description Indicator Process Target
File opened (read-only) \??\e: C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

Drops file in Program Files directory

Description Indicator Process Target
File created C:\Program Files\Common Files\System\symsrv.dll C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A
File created \??\c:\program files\common files\system\symsrv.dll.000 C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

System Location Discovery: System Language Discovery

discovery
Description Indicator Process Target
Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe

"C:\Users\Admin\AppData\Local\Temp\af85f214ec08536d519e29f72b8419c95726c03f729c7c121204a965ac5912fa.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 5isohu.com udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 www.aieov.com udp
US 198.58.118.167:80 www.aieov.com tcp
US 8.8.8.8:53 17.160.190.20.in-addr.arpa udp
US 8.8.8.8:53 167.118.58.198.in-addr.arpa udp
US 8.8.8.8:53 5isohu.com udp
US 198.58.118.167:80 www.aieov.com tcp
US 8.8.8.8:53 104.219.191.52.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 192.142.123.92.in-addr.arpa udp
US 8.8.8.8:53 205.47.74.20.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 150.171.28.10:443 tse1.mm.bing.net tcp
US 8.8.8.8:53 10.28.171.150.in-addr.arpa udp

Files

C:\Program Files\Common Files\System\symsrv.dll

MD5 7574cf2c64f35161ab1292e2f532aabf
SHA1 14ba3fa927a06224dfe587014299e834def4644f
SHA256 de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085
SHA512 4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

memory/1956-4-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1956-6-0x0000000001004000-0x0000000001007000-memory.dmp

memory/1956-12-0x0000000001000000-0x000000000103F000-memory.dmp

memory/1956-15-0x0000000010000000-0x0000000010030000-memory.dmp

memory/1956-16-0x0000000001000000-0x000000000103F000-memory.dmp